Depth distribution of the fluorine concentration during radiative carbonization of PVDF

Surface analysis insight note: Accounting for X‐ray beam damage effects in positive electrode‐electrolyte interphase investigations

“…However, the effects of X‐ray beam damage are often overlooked when studying heterogeneous electrode samples consisting of SEI‐covered active material, a conductive additive, and polymer‐based binder. Several studies reported that polymer irradiation with X‐ray (mostly Al Kα X‐ray source of 1.5 KeV) is followed by heteroatom loss inducing chemical and structural modifications 22–27 . In the composite electrode, polymer binder bond breaking can result in changes in the organic/inorganic composition of SEI and active material.…”

“…Several studies reported that polymer irradiation with X-ray (mostly Al Kα X-ray source of 1.5 KeV) is followed by heteroatom loss inducing chemical and structural modifications. [22][23][24][25][26][27] In the composite electrode, polymer binder bond breaking can result in changes in the organic/inorganic composition of SEI and active material. In fact, a recent work based on synchrotron operando X-ray diffraction proposed that the matrix elements surrounding active particles might play a significant role in the beam damage mechanism.…”